Inventor · disambiguated record
Yoichi Sekii
Also filed as: SEKII YOICHI
63 granted patents·20 pending applications·252 citations·filing 2004–2024
98Inventor score
Top patents by PatentIndex Score
83 records- 0197US8120872B2Spindle motor and disk drive apparatusSEKII YOICHI·Filed 2010·Granted Feb 21, 2012·43 cites·20 claims
- 0293US8385017B2Spindle motor including fluid bearing and storage disk drive including the sameNIDEC CORP·Filed 2011·Granted Feb 26, 2013·16 cites·23 claims
- 0391US8879204B2Motor and disk drive apparatusNIDEC CORP·Filed 2013·Granted Nov 4, 2014·7 cites·28 claims
- 0491US8724257B2Hydrodynamic bearing apparatus and spindle motor and disk drive apparatus including the sameSEKII YOICHI·Filed 2013·Granted May 13, 2014·17 cites·16 claims
- 0590US8379345B2Spindle motor having dynamic pressure fluid bearing for use in a storage disk driveNIDEC CORP·Filed 2011·Granted Feb 19, 2013·14 cites·20 claims
- 0689US8873198B1Motor and disk drive apparatusNIDEC CORP·Filed 2014·Granted Oct 28, 2014·8 cites·32 claims
- 0786US8284515B2Fluid dynamic pressure bearing device, spindle motor and disk drive apparatusSEKII YOICHI·Filed 2011·Granted Oct 9, 2012·12 cites·14 claims
- 0886US6980394B2Spindle motor and recording disk driving device comprising the sameNIDEC CORP·Filed 2004·Granted Dec 27, 2005·38 cites·22 claims
- 0984US8358483B2Spindle motor including annular magnetic member and disk drive apparatus including such a spindle motorNIDEC CORP·Filed 2010·Granted Jan 22, 2013·6 cites·31 claims
- 1084US8056210B2Manufacturing method for motorGOMYO MASATO·Filed 2007·Granted Nov 15, 2011·6 cites·16 claims
- 1183US8520335B2Spindle motor including hydrodynamic bearing and storage disk drive including sameMIZUKAMI JUNYA·Filed 2011·Granted Aug 27, 2013·7 cites·15 claims
- 1282US8794839B2Bearing apparatus, spindle motor, and disk drive apparatusKIMURA AKIHIRO·Filed 2012·Granted Aug 5, 2014·5 cites·31 claims
- 1382US8169738B1Fluid dynamic bearing mechanism including communicating channel, spindle motor, and disk drive apparatusYAWATA ATSUSHI·Filed 2011·Granted May 1, 2012·6 cites·20 claims
- 1481US8284513B2Fluid dynamic pressure bearing device, spindle motor and disk drive apparatusSEKII YOICHI·Filed 2010·Granted Oct 9, 2012·6 cites·40 claims
- 1581US7374340B2Fluid dynamic-pressure bearing, spindle motor and recording disk driving deviceNIDEC CORP·Filed 2005·Granted May 20, 2008·7 cites·20 claims
- 1680US8508884B2Spindle motor including magnetic member and disk drive apparatus including sameNIDEC CORP·Filed 2012·Granted Aug 13, 2013·4 cites·20 claims
- 1779US8724256B2Bearing apparatus, spindle motor, and disk drive apparatusNIDEC CORP·Filed 2013·Granted May 13, 2014·5 cites·32 claims
- 1879US8711514B2Motor and disk drive apparatusIWASAKI SHUJI·Filed 2012·Granted Apr 29, 2014·6 cites·32 claims
- 1977US8797678B1Spindle motor and disk drive apparatusNIDEC CORP·Filed 2013·Granted Aug 5, 2014·4 cites·18 claims
- 2076US8553355B2Spindle motor and storage disk driveNIDEC CORP·Filed 2013·Granted Oct 8, 2013·4 cites·22 claims
- 2175US11990812B2Routing structure of conductive wire, motor, resolver, and method for manufacturing electronic deviceNIDEC CORP·Filed 2022·Granted May 21, 2024·0 cites·17 claims
- 2275US11025106B2Stator winding for motorNIDEC CORP·Filed 2018·Granted Jun 1, 2021·1 cites·7 claims
- 2375US8941946B2Motor including dynamic bearing with seal portion and disk drive apparatus including the sameNIDEC CORP·Filed 2013·Granted Jan 27, 2015·3 cites·20 claims
- 2475US8922945B2Disk drive spindle motor with wiring substrate having extension portion passing through opening in baseNIDEC CORP·Filed 2013·Granted Dec 30, 2014·3 cites·30 claims
- 2575US7550887B2Spindle motor and method of manufacturing spindle motorNIDEC CORP·Filed 2005·Granted Jun 23, 2009·5 cites·18 claims
- 2672US8542459B2Spindle motor and storage disk driveNIDEC CORP·Filed 2013·Granted Sep 24, 2013·3 cites·22 claims
- 2770US11843307B2Motor and motor assemblyNIDEC CORP·Filed 2021·Granted Dec 12, 2023·0 cites·20 claims
- 2870US8670209B2Spindle motor including a fluid dynamic bearing and disk drive apparatus with sameNIDEC CORP·Filed 2013·Granted Mar 11, 2014·2 cites·20 claims
- 2969US12323032B2MotorNIDEC CORP·Filed 2022·Granted Jun 3, 2025·0 cites·16 claims
- 3069US10177625B2MotorNIDEC CORP·Filed 2016·Granted Jan 8, 2019·1 cites·18 claims
- 3169US8144423B2Fluid dynamic pressure bearing device, spindle motor and disk drive apparatusSEKII YOICHI·Filed 2009·Granted Mar 27, 2012·4 cites·20 claims
- 3268US10476329B2Motor including a seal covering a high reflectivity metallic surface of a rotor hubNIDEC CORP·Filed 2017·Granted Nov 12, 2019·1 cites·20 claims
- 3368US8508883B2Motor including hydrodynamic bearing and disk drive apparatus including sameTAMAOKA TAKEHITO·Filed 2012·Granted Aug 13, 2013·2 cites·15 claims
- 3467US11146130B2Motor including a seal covering a high reflectivity metallic surface of a rotor hubVALVE CORP·Filed 2019·Granted Oct 12, 2021·0 cites·20 claims
- 3567US10318774B2Housing, housing unit, and casing unitNIDEC CORP·Filed 2017·Granted Jun 11, 2019·1 cites·13 claims
- 3666US8824097B2Motor and disk drive apparatusNIDEC CORP·Filed 2014·Granted Sep 2, 2014·1 cites·24 claims
- 3765US12362609B2Motor with an air-core coil and back yoke to reduce eddy current lossesNIDEC CORP·Filed 2022·Granted Jul 15, 2025·0 cites·18 claims
- 3865US10559998B2Motor and disk drive apparatusNIDEC CORP·Filed 2017·Granted Feb 11, 2020·0 cites·18 claims
- 3964US9194434B2Spindle motor and disk drive apparatusNIDEC CORP·Filed 2014·Granted Nov 24, 2015·1 cites·16 claims
- 4063US2024128846A1Vibration motor and tactile device including the sameNIDEC CORP·Filed 2023·Application pending·0 cites
- 4162US10908413B2Rotary drive apparatusNIDEC CORP·Filed 2017·Granted Feb 2, 2021·0 cites·18 claims
- 4262US9837872B2Motor and disk drive apparatusNIDEC CORP·Filed 2014·Granted Dec 5, 2017·0 cites·19 claims
- 4361US11725713B2Planetary gear mechanism and geared motorNIDEC CORP·Filed 2021·Granted Aug 15, 2023·0 cites·20 claims
- 4461US8810096B2Spindle motor with fluid dynamic bearing and storage disk driveMIZUKAMI JUNYA·Filed 2011·Granted Aug 19, 2014·1 cites·20 claims
- 4559US8514515B2Motor and disk drive apparatusIWASAKI SHUJI·Filed 2012·Granted Aug 20, 2013·1 cites·34 claims
- 4659US2025219504A1Motor and blowerNIDEC CORP·Filed 2024·Application pending·0 cites
- 4758US12463490B2Motor moduleNIDEC CORP·Filed 2023·Granted Nov 4, 2025·0 cites·6 claims
- 4858US8873197B1Motor and disk drive apparatusNIDEC CORP·Filed 2014·Granted Oct 28, 2014·0 cites·9 claims
- 4958US8240920B2Fluid dynamic bearing, motor, and recording disk drive apparatusSEKII YOICHI·Filed 2008·Granted Aug 14, 2012·1 cites·28 claims
- 5057US10495871B2Rotary drive apparatusNIDEC CORP·Filed 2018·Granted Dec 3, 2019·0 cites·15 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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